Have a look at the drs_exam.cpp program which comes with the software, it implements exactly this sequence.

/Stefan 

 Dear Stefan

Thank you very much for the answer. I did not have a chance to implement this yet.

I have a  follow up question: 

Is the following sequence already implemented in the DRS oscilloscope program? Could you point me to an example of such a sequence?

- arm DRS4 board

- wait for trigger by calling IsBusy()

- read out DRS4 board

- call StartDomino(), which re-enables also the trigger through

Cheers

Dmitry

As written in the manual, the board withstands +-20V pulses which are shorter then 2 usec, and a DC input of +-10V. If your pulses are bigger or longer, you will kill the input buffer chip, which needs to be re-soldered. You can check if the channel is broken by applying a periodic signal of known amplitude (e.g. a 100 mV 1 MHz sine wave). If the measured amplitude differs significantly from the others (like only half the amplitude) or is completely flat, you burned the input stage. When you are next time at PSI you can bring the board and we can then fix it.

/Stefan

 Dear Stefan

Last month I was using a DRS4 evaluation board to digitise the signal from the charged particles in piM1 beam line at PSI. The beam in piM1 is a mixture of pions with a small percentage of protons. Pions are close to minimum ionising and were producing the signals on the order of 250 mV (Landau distributed). The protons at this momentum (250 MeV) are not minimum ionising  and produced much higher signals ( I could not exactly measure them because they were of scale for the DRS4 board). The pulses were on the order of 0.5 usec long. At low rate (~1kHz) the board was able to handle them, but when I turned the rate of particles to about ~300 kHz, the channel went flat. My question is whether the evaluation board has some type of input protection that would be possible to replace? Or does that mean that I have burned the input of the DRS4 board itself? Other channels behaving normal.

Thank you

Dmitry. 

Have a look at the Evaluation Board description at http://www.psi.ch/drs/evaluation-board. It says that you have 1024 sampling points per channel. So If you sample at 0.7 GSPS, this gives you a time range of 1/0.7 GHz * 1024 = 1.46 us.

Best regards,
Stefan

I m trying to measure lifetime in our lab and I intend to take
measurement with DRS4 at that point I have a little bit confused about
DRS4 time range.In My system I opened 10 us gate but after triggering
DRS4 measure nearly 1.2 us. Because of this I want to extend DRS4 time range that
measurement range from 1.2us to 10 us.  

No. See the DRS4 datasheet: http://www.psi.ch/drs/DocumentationEN/DRS4_rev09.pdf 

Minimum sampling speed is 700 MSPS.

/Stefan

Dear Stefan

Is there an easy way to reduce sampling speed below 0.7 GSPS? I would like to record traces up to 5 usec long.

Thank you

Dmitry 

The evaluation board V4 does not support cascading by default. You have to connect each input to two channels, which can in principle be made by soldering some zero Ohm resistors on the board, but these are tiny parts and not everybody can do it. Note that the 2048 cell mode is an option when ordering the board. So first make sure that you can modify the board before trying to run the software. 

Sorry for my question.

 I'm trying change "drs_exam.cpp" for read 2048 cell. 

I'm using SetChannnelConfig(0,8,4) and this code in "drs_exam.cpp" :

              ...

              float arrX[2048];

              float arrY[2048];

              ....

             b->GetTime(0, b->GetTriggerCell(0), arrX);

             b->GetWave(0, 0, arr.Y); 

             ....

Return 2048 values in arrX[2048] - correct values, but  in arrY[2048] -  not correct values.

   I can't understand what values return "GetWave" function. Please, say me how make, that GetWave function return correct values.  " not - correct values "(i mean that i give signal in drs bord and values not true.) 

Best regards,

Schablo Kostya 

The CoreText issue comes from WxWidgets or a combination with OSX 10.9. Many other people have the same problem:

https://bugzilla.mozilla.org/show_bug.cgi?id=934261

and I have no idea how to get rid of it.

Concerning your problem with the binary format, just have a look at elog:272

 I will have beam test next week :-(

I installed wxWidgets-3.0 using MacPorts (and libusb too). After removing strlcpy and hacking of Makefile I managed to build MacOS application. 

When I launch DRSOsc.app/Contents/MacOS/DRSOsc from terminal, I see constantly pouring messages about fonts:

2013-11-19 12:21:22.232 DRSOsc[99520:507] CoreText performance note: Client called CTFontCreateWithName() using name "Lucida Grande" and got font with PostScript name "LucidaGrande". For best performance, only use PostScript names when calling this API.

2013-11-19 12:21:22.275 DRSOsc[99520:507] CoreText performance note: Client called CTFontCreateWithName() using name "Lucida Grande" and got font with PostScript name "LucidaGrande". For best performance, only use PostScript names when calling this API.

...

How may I get rid of them?

Another problem: I was not able to save data in binary (*.dat) file. I used DRSOsc settings to set binary format, I specified explicit extension *.dat, tried everything (including hiding extension), but was not able to save in binary format. Do I need to apply some trick? How may I hardcode usage of the binary format?

Thanks,

Andriy.

DRSOsc seems broken on OSX 10.9. I'm working on this right now. Some of the problems are related to wxWidgets, so I'm waiting for a new version running stably under OSX 10.9. The compilation problem related to "strlcpy" comes from the fact that OSX 10.9 now comes with its own version of that function, while all previous versions did not. So simply removing strlcpy.h/c from the project fixes that.

There will be a new version of DRSOsc next month which fixes all this problems, so just stay tuned.

/Stefan 

 I installed Mac OS package on macbook (late 2013). DRSOsc starts to write file but freezes; need to be restarted to restore connection with DRS4 evaluation board (ordered Aug 2011). 

When I ran from the command line, I see these messages:

phone$ /Applications/DRSOsc.app/Contents/MacOS/DRSOsc

2013-11-18 15:11:31.278 DRSOsc[96539:507] CoreText performance note: Client called CTFontCreateWithName() using name "Lucida Grande" and got font with PostScript name "LucidaGrande". For best performance, only use PostScript names when calling this API.

2013-11-18 15:11:31.279 DRSOsc[96539:507] CoreText performance note: Set a breakpoint on CTFontLogSuboptimalRequest to debug.

2013-11-18 15:11:31.281 DRSOsc[96539:507] CoreText performance note: Client called CTFontCreateWithName() using name "Lucida Grande" and got font with PostScript name "LucidaGrande". For best performance, only use PostScript names when calling this API.

2013-11-18 15:11:31.283 DRSOsc[96539:507] CoreText performance note: Client called CTFontCreateWithName() using name "Lucida Grande" and got font with PostScript name "LucidaGrande". For best performance, only use PostScript names when calling this API.

2013-11-18 15:11:31.285 DRSOsc[96539:507] CoreText performance note: Client called CTFontCreateWithName() using name "Lucida Grande" and got font with PostScript name "LucidaGrande". For best performance, only use PostScript names when calling this API.

0 - 0.250

1 - 0.250

2 - 0.250

3 - 0.250

0 - 0.250

1 - 0.250

2 - 0.250

3 - 0.250

2013-11-18 15:11:32.933 DRSOsc[96539:507] CoreText performance note: Client called CTFontCreateWithName() using name "Lucida Grande" and got font with PostScript name "LucidaGrande". For best performance, only use PostScript names when calling this API.

...

...

and these:

musb_write: requested 10, wrote 0, errno -4 (Unknown error: -4)

musb_read error 0

musb_write: requested 10, wrote 0, errno -4 (Unknown error: -4)

musb_read error 0

...

...

I tried to compile Linux package, but got error messages:

drs-4.0.1$ make

cc -g -O2 -Wall -Wuninitialized -fno-strict-aliasing -Iinclude -I/opt/local/include -DOS_DARWIN -DHAVE_USB -DHAVE_LIBUSB10 -DUSE_DRS_MUTEX -c src/musbstd.c

cc -g -O2 -Wall -Wuninitialized -fno-strict-aliasing -Iinclude -I/opt/local/include -DOS_DARWIN -DHAVE_USB -DHAVE_LIBUSB10 -DUSE_DRS_MUTEX -c src/mxml.c

In file included from src/mxml.c:79:

include/strlcpy.h:27:14: error: expected parameter declarator

size_t EXPRT strlcpy(char *dst, const char *src, size_t size);

             ^

/usr/include/secure/_string.h:105:44: note: expanded from macro 'strlcpy'

  __builtin___strlcpy_chk (dest, src, len, __darwin_obsz (dest))

                                           ^

/usr/include/secure/_common.h:39:62: note: expanded from macro '__darwin_obsz'

#define __darwin_obsz(object) __builtin_object_size (object, _USE_FORTIFY_LEVEL > 1 ? 1 : 0)

                                                             ^

/usr/include/secure/_common.h:30:32: note: expanded from macro '_USE_FORTIFY_LEVEL'

#    define _USE_FORTIFY_LEVEL 2

                               ^

In file included from src/mxml.c:79:

include/strlcpy.h:27:14: error: expected ')'

/usr/include/secure/_string.h:105:44: note: expanded from macro 'strlcpy'

  __builtin___strlcpy_chk (dest, src, len, __darwin_obsz (dest))

                                           ^

/usr/include/secure/_common.h:39:62: note: expanded from macro '__darwin_obsz'

#define __darwin_obsz(object) __builtin_object_size (object, _USE_FORTIFY_LEVEL > 1 ? 1 : 0)

                                                             ^

/usr/include/secure/_common.h:30:32: note: expanded from macro '_USE_FORTIFY_LEVEL'

#    define _USE_FORTIFY_LEVEL 2

                               ^

include/strlcpy.h:27:14: note: to match this '('

/usr/include/secure/_string.h:105:44: note: expanded from macro 'strlcpy'

  __builtin___strlcpy_chk (dest, src, len, __darwin_obsz (dest))

                                           ^

/usr/include/secure/_common.h:39:53: note: expanded from macro '__darwin_obsz'

#define __darwin_obsz(object) __builtin_object_size (object, _USE_FORTIFY_LEVEL > 1 ? 1 : 0)

                                                    ^

In file included from src/mxml.c:79:

include/strlcpy.h:27:14: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]

size_t EXPRT strlcpy(char *dst, const char *src, size_t size);

             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

/usr/include/secure/_string.h:105:44: note: expanded from macro 'strlcpy'

  __builtin___strlcpy_chk (dest, src, len, __darwin_obsz (dest))

                                           ^~~~~~~~~~~~~~~~~~~~

/usr/include/secure/_common.h:39:31: note: expanded from macro '__darwin_obsz'

#define __darwin_obsz(object) __builtin_object_size (object, _USE_FORTIFY_LEVEL > 1 ? 1 : 0)

                              ^~~~~~~~~~~~~~~~~~~~~

In file included from src/mxml.c:79:

include/strlcpy.h:27:14: error: conflicting types for '__builtin___strlcpy_chk'

/usr/include/secure/_string.h:105:3: note: expanded from macro 'strlcpy'

  __builtin___strlcpy_chk (dest, src, len, __darwin_obsz (dest))

  ^

include/strlcpy.h:27:14: note: '__builtin___strlcpy_chk' is a builtin with type 'unsigned long (char *, const char *, unsigned long, unsigned long)'

/usr/include/secure/_string.h:105:3: note: expanded from macro 'strlcpy'

  __builtin___strlcpy_chk (dest, src, len, __darwin_obsz (dest))

  ^

In file included from src/mxml.c:79:

include/strlcpy.h:28:14: error: expected parameter declarator

size_t EXPRT strlcat(char *dst, const char *src, size_t size);

             ^

/usr/include/secure/_string.h:111:44: note: expanded from macro 'strlcat'

  __builtin___strlcat_chk (dest, src, len, __darwin_obsz (dest))

                                           ^

/usr/include/secure/_common.h:39:62: note: expanded from macro '__darwin_obsz'

#define __darwin_obsz(object) __builtin_object_size (object, _USE_FORTIFY_LEVEL > 1 ? 1 : 0)

                                                             ^

/usr/include/secure/_common.h:30:32: note: expanded from macro '_USE_FORTIFY_LEVEL'

#    define _USE_FORTIFY_LEVEL 2

                               ^

In file included from src/mxml.c:79:

include/strlcpy.h:28:14: error: expected ')'

/usr/include/secure/_string.h:111:44: note: expanded from macro 'strlcat'

  __builtin___strlcat_chk (dest, src, len, __darwin_obsz (dest))

                                           ^

/usr/include/secure/_common.h:39:62: note: expanded from macro '__darwin_obsz'

#define __darwin_obsz(object) __builtin_object_size (object, _USE_FORTIFY_LEVEL > 1 ? 1 : 0)

                                                             ^

/usr/include/secure/_common.h:30:32: note: expanded from macro '_USE_FORTIFY_LEVEL'

#    define _USE_FORTIFY_LEVEL 2

                               ^

include/strlcpy.h:28:14: note: to match this '('

/usr/include/secure/_string.h:111:44: note: expanded from macro 'strlcat'

  __builtin___strlcat_chk (dest, src, len, __darwin_obsz (dest))

                                           ^

/usr/include/secure/_common.h:39:53: note: expanded from macro '__darwin_obsz'

#define __darwin_obsz(object) __builtin_object_size (object, _USE_FORTIFY_LEVEL > 1 ? 1 : 0)

                                                    ^

In file included from src/mxml.c:79:

include/strlcpy.h:28:14: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]

size_t EXPRT strlcat(char *dst, const char *src, size_t size);

             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

/usr/include/secure/_string.h:111:44: note: expanded from macro 'strlcat'

  __builtin___strlcat_chk (dest, src, len, __darwin_obsz (dest))

                                           ^~~~~~~~~~~~~~~~~~~~

/usr/include/secure/_common.h:39:31: note: expanded from macro '__darwin_obsz'

#define __darwin_obsz(object) __builtin_object_size (object, _USE_FORTIFY_LEVEL > 1 ? 1 : 0)

                              ^~~~~~~~~~~~~~~~~~~~~

In file included from src/mxml.c:79:

include/strlcpy.h:28:14: error: conflicting types for '__builtin___strlcat_chk'

/usr/include/secure/_string.h:111:3: note: expanded from macro 'strlcat'

  __builtin___strlcat_chk (dest, src, len, __darwin_obsz (dest))

  ^

include/strlcpy.h:28:14: note: '__builtin___strlcat_chk' is a builtin with type 'unsigned long (char *, const char *, unsigned long, unsigned long)'

/usr/include/secure/_string.h:111:3: note: expanded from macro 'strlcat'

  __builtin___strlcat_chk (dest, src, len, __darwin_obsz (dest))

  ^

2 warnings and 6 errors generated.

make: *** [mxml.o] Error 1

What the best way to build DRSOsc on the Mac OS X?

Thanks,

Andriy.

There are indeed several methods. You can output the trigger number at the DRS evaluation board via the trigger output, but you would have to implement this yourself in the firmware.

The send-though of recorded triggers is already implemented in the board, so you could use that. The only thing to make sure is to to readout and re-enable the PSI46 board before you readout the DRS4 board. If you would first read the DRS4 board, and re-enable the DRS4 board via StartDomino(), then there could be the next trigger going through to the PSI46 board without that board being ready. So the sequence is

- connect trigger out of DRS4 to PSI46

- arm PSI46 board

- arm DRS4 board

- wait for trigger by calling IsBusy()

- read out PSI46 board

- read out DRS4 board

- call StartDomino(), which re-enables also the trigger though

Best regards,

Stefan

 Dear Stefan,

I am trying to synchronise the readout of two test boards, one is the DRS4 test board, the other is PSI46 test board (used for the readout of  CMS pixel chip) for the offline analysis. I think that the most secure way to accomplish this is to pass a trigger number from one test board to the other.

The PSI46 test board has a software which allows it to accept a 16 bit number following the trigger pulse. I was wondering whether it would be possible for DRS4 board to generate such a trigger number on the trigger out line after sending the trigger. Also would it be possible to record this trigger number for every event stored by DRS4 board?

If none of this possible or requires a lot of time, then as a minimum, would it be possible to send-through only the triggers that were recorded by the DRS4 board?

Please let me know if you have better idea how to do this.

Thank you very much,

Dmitry.

yes the problem was in wxWidgets, I have downgraded the ubuntu version and installed packaged version of wxWidgets. Now it works without problems.

Thank you,

Dmitry. 

You have to combine two channels into one, and depending on where the domino wave stopped, things get a bit complicated. I attach 2048_mode.ppt for your reference, but am not sure if this will really help.

/Stefan 

 Hello,  I want use cascading of channels for 2048 cell - SetChannelConfig(0,8,4), but i can't understand how . Please, help me. Where i can dowload 2048_mode.ppt. (I found information about this file in DRS.cpp  (3445 line  "/ combine two halfs correctly, see 2048_mode.ppt")

Best regards,

Schablo Kostya 

 USR_LIB_VEC_IOFD_CPE_NALL is defined in firmware/srs/usr_lib.vhd which is part of the software package.